Financing (Details 4) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Debentures, Face Value	$ 53	$ 53
Debentures, Carrying Value	53	53
Debentures, Accrued Interest	7	7
Debentures, Embedded Conversion Feature	2,446	16
Debentures, Common Stock Shares (in shares)	4,922,928	1,002,281
Series C Preferred Stock [Member]
Preferred stock	4,840	4,840
Preferred stock, Carrying Value	4,840	4,804
Preferred Stock, Accrued Interest	0	0
Preferred Stock, Embedded Conversion Feature	2,277	1,988
Common Stock Shares (in shares)	273,382	923,953
Series D Preferred Stock [Member]
Preferred stock	348	348
Preferred stock, Carrying Value	348	348
Preferred Stock, Accrued Interest	0	0
Preferred Stock, Embedded Conversion Feature	164	143
Common Stock Shares (in shares)	245,162	66,457
Debentures 2006 Series [Member]
Debentures, Face Value	53	53
Debentures, Carrying Value	53	53
Debentures, Accrued Interest	7	7
Debentures, Embedded Conversion Feature	$ 5	$ 16
Debentures, Common Stock Shares (in shares)	60,917	11,871